<!--
 * @Descripttion: 
 * @version: 
 * @Author: EayCome
 * @Date: 2021-02-09 19:04:11
 * @LastEditors: EayCome
 * @LastEditTime: 2021-02-09 19:30:27
-->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="flatten.js"></script>
</head>

<body>
    <script>
        // 声明一个数组
        let arr = [1, [2, 3, [4, 5]]];
        // 数组扁平化
        // console.log(flatten1(arr))
        // some 以及 concat
        console.log(flatten2(arr))
    </script>
</body>

</html>